Street-flushing machine.



J. I. BRORBY.

STREET FLUSHING MACHINE. APPLIOATION FILED AUG. 1o, 1910.

2 SHEETS-SHEET 1.

me/Mofa Patented Mar. 21, 1911.

J. I. BRORBY. STREET ELUSEING MACHINE.

APPLICATION FILED vAUG. 10, 1910.

987,545. Patented Mar.21,1911.

2 sHEETssHEET 2. Y

JACOB I. BRORBY, OF SHENANDOAH, IOWA.

STREET-FLUSHING MACHINE.

Specication of Letters Patent.

Patented Mar. 21, 19911.

Application filed August 10, 1910. Serial No. 576,453.

To all whom 'it 'may concern:

Be it known that I, JACOB T. BRORBY, a citizen of t-he United States,residing at Shenandoah, in the county of Page and State of Iowa, haveinvented new and useful Improvements in Street-Flushing Machines, ofwhich the following is a specification.

This invention relates to street sprinklers and liushers and the objectof the invention is to provide an efficient machine of this characteremploying a water and an air compartment and means to regulate thepressure of the water at the spraying nozzle irrespective of thevariation in pressure in the air compartment.

Further objects of the invention will appear as the following specificdescription is read in connection with the accompanying drawings whichform a part of this application, and in which:

Figure 1 is a side elevation. Fig. 2 is a bottom plan view partly insection. Fig. 3 is a vertical sectional view taken on the line 3 3 of Fig. 1.

Referring more particularly to the drawing 1 represents a wheelsupported truck upon which a tank 2 is mounted. This tank is dividedinto separate compartments 3 and 4 by means of a partition 5 whichcompletely separa-tes the separate compartments. The compartment 4 issomewhat larger than the compartment 3 and is adapted to contain waterwhile the compartment 3 is adapted to contain air. A suitable manhole 6is formed in the tank so as to communicate with the compartment 4 and anipple 7 is threaded into the tank and provided with a check valve 8 anda threaded end 9 to receive a hose by which the compartment 4 may beiilled from the hydrant or other suitable source.

Extending from the compartment 4 is a nipple 10 which is similar to anipple 11 eX- tending from the compartment 3. These nipples areconnected by a pipe 12 in which a suitable valve 13 and a pressure gage14 are mounted. At the free end of the pipe a valved extension 15 issecured. When the valve 13 is open the air in the compartment 3 is freeto pass therefrom into the compartment 4 so as to force the water out ofsaid compartment as will be hereinafter described. The nipple 10 extendssome distance into the compartment 4 and has depending therefrom a valvecage 16 in which a ball valve 17 is mounted so that when the water inthe compartment 4 rises Suthciently to iioat the valve 17, it will forma seal and prevent the water from entering the compartment 3. In fillingthe tank the valve 13 is left open so that the water as it rises in thetank compresses the air therein and forces it into the compartment 3where it may be utilized to eject the water from the compartment 4. Anoutlet nipple 13 is connected to the tank for communication with thecompartment 4 and has a foraminous valve cage 19 secured therein with aball float valve 20 adapted to cut oif the passage through the nipplewhen the water is lowered to such an extent as to seat the valve, thuspreventing the air from escaping. This nipple is connected on theoutside of the tank with a discharge pipe 21 and also with a dischargepipe 22. The former pipe extends rearwardly alongside of the tank to apoint adjacent the rear end thereof where it is provided with a valve 23controlled through a link 24 operated from the drivers seat by a lever23. The opposite side of the valve 23 leads through a pipe 24 to aspraying nozzle 25. The pipe 22 has upon its outer end a flushing nozzle26 which is controlled by a valve 27 operated through the link 2S by alever 29 at the drivers seat.

Suitably mounted upon the truck is a cylinder 30 having connection withthe compartment 3 through a valved pipe 31. Mounted in the cylinder is aspring projected piston 32 whose piston rod 33 is connected to the valvearm 34 which operates the valve 27. This device automatically controlsthe pressure at the nozzle 26 as follows: TWhen there is a high pressurein the compartment 3 the spring pressed piston is moved outwardlyagainst the tension of the spring and thus the valve 27 is operated andacts to reduce the iow of water through the pipe 22. As the pressuredecreases in the compartment 3 the spring behind the piston will forcethe piston forward and thus open the valve 27 permitting more water toflow at a reduced pressure. The levers 29 and 23 may be held in any oneof their respective positions by notched segments or the like.

The larrangement of Y the pipe 21 and spraying cap or nozzle 25 isduplicated upon the opposite side of the tank.

Having thus described the invention, what is claimed isl. A sprinklingdevice comprising a tank,

a partition dividing the tank into Water and air compartments, meansconnecting the Water and air compartments having a Valve therein tocontrol the supply from one to the other, a val-'ved discharge pipeconnected with the Water compartment, and means communicating With theair compartment and connected to the valve in the discharge pipe forcontrolling the flow through the discharge nozzle.

2. A device of the class described comprising a tank, a Ipartitionseparating said tank into air and water compartments, a discharge pipeconnected to the Water compartment and having a nozzle thereon, a valvefor controlling the discharge through said pipe, and means communicatingWith -the air compartment and connected to the Valve for automaticallycontrolling the flow of water to said discharge pipe, together with handoperated means for controlling the Valve.

3. A device of the class described comprising a tank, a partitionseparating the same into air and Water compartments, a discharge pipeconnected to the Water compartment, a valved pipe connected to the aircon'ipartment, a cylinder communicating with said last-named pipe, aspring pressed piston mounted in said cylinder, ,a Valve controlling theflow .of Water through the discharge pipe, and means connecting thespring pressed piston and the Valve Where by the flow through `thenozzle of the discharge pipe is regulated independently of the pressurein the Water compartment.

In testimony whereof I a'iliX my signature in presence of two witnesses.

JACOB I. BRORBY. Vitnesses R. B. MURPHY, H. E. Boss.

.Copies .of this patent may be obtained for -ve cents each, byaddressing the Commissioner of Patents, Washington, D. C.

